Dispersion machine

Abstract

To provide a dispersion machine which suppresses stagnation and blockage of media unevenly distributed in a discharge port of a container, and can treat a large amount of dispersion objects at high speed.SOLUTION: A dispersion machine includes a rotation shaft, a plurality of dispersion discs mounted on the rotation shaft at intervals, and a centrifugal rotor 30 mounted on the rotation shaft so as to face a discharge part. The centrifugal rotor 30 has a columnar rotor body part 31, and a large diameter part 32 having an outer diameter larger than the outer diameter of the rotor body part 31. The large diameter part 32 has ring-shaped grooves which are formed around the rotor body part 31 of an upper surface 32A on the upstream side and a lower surface 32B on the downstream side, and a plurality of grooves 34A and 34B which is radially formed from the ring-shaped grooves while communicating with the outer edges of each of both of the ring-shaped grooves.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a media-type disperser that disperses or pulverizes a material to be dispersed while supplying it and mixing it with media already placed in a container in the process of producing dispersion pastes for paints, inks, pharmaceuticals, cosmetics, foods, batteries, electronic components, etc. [Background technology]

[0002] A media-type disperser that disperses, agitates, or pulverizes a material to be dispersed using media (e.g., glass, zirconia, or other beads) is known as a conventional disperser. For example, a disperser includes multiple dispersion disks evenly spaced on a rotating shaft within a container and a centrifugal rotor located downstream of the dispersion rotor. The centrifugal rotor includes a cylindrical rotor main body, a large-diameter section at one downstream end of the rotor main body that has an outer diameter larger than that of the rotor main body, an outer peripheral section that protrudes upstream from the outer peripheral side of the large-diameter section and surrounds the rotor main body, and a through-hole formed in the large-diameter section that penetrates the large-diameter section in the thickness direction between the rotor main body and the outer peripheral section in the radial direction of the large-diameter section. As the centrifugal rotor rotates, the outer peripheral section generates an agitation flow, which returns the material to be dispersed and the media contained therein from the discharge section to the upstream side along the end surface and inner peripheral wall of the container (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7111400 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the disperser described in Patent Document 1 has the following problem. When a disperser is scaled up by increasing the outer diameter of the container and increasing the amount of material to be dispersed (for example, from a container of 5 liters to 20 liters), the outer diameter of the centrifugal rotor also increases. When the outer diameter of the centrifugal rotor increases, the material to be dispersed and the media cannot be returned to the upstream side, and problems arise in which the media are unevenly distributed at the discharge outlet, stagnating and clogging. The inventors of the present application therefore conducted extensive research to solve this problem, and as a result, they discovered that if the centrifugal rotor is rotated at the same peripheral speed as the small-scale machine before scaling up, the rotation speed becomes slower, and the stirring flow generated by the outer peripheral part of the centrifugal rotor protruding upstream reduces the centrifugal force acting on the media, making it impossible to move the media.

[0005] The present invention has been made to solve such problems, and aims to provide a dispersing machine that can suppress stagnation and blockage of media unevenly distributed at the discharge outlet of a container and can process large amounts of dispersion material at high speed. [Means for solving the problem]

[0006] The present invention provides the following disperser.

[0007] That is, it is a media-type disperser that disperses a material to be dispersed using the media in a container while sending the material to be dispersed, which is fed from a feed section provided on the upstream side of the container, toward a discharge section provided on the downstream side of the container, A rotation axis; a plurality of dispersion disks attached to the rotating shaft at intervals; a centrifugal rotor attached to the rotary shaft so as to face the discharge portion downstream of the plurality of dispersion disks, the centrifugal rotor has a cylindrical rotor body and a large-diameter portion having an outer diameter larger than the outer diameter of the rotor body, the large diameter portion has a ring-shaped groove formed around the rotor body on both an upper surface on the upstream side and a lower surface on the downstream side, and a plurality of grooves formed radially from the ring-shaped groove and communicating with an outer edge of the ring-shaped groove, A dispersing machine characterized in that the large diameter portion and the downstream side surface of the dispersing disk are configured to face each other.

[0008] According to this configuration, the media and dispersion target material introduced into the container are dispersed by the rotation of the multiple dispersion disks and flow downstream along the inner circumferential wall of the container. A centrifugal rotor, attached to a rotating shaft facing the discharge section downstream of the multiple dispersion disks, circulates the dispersion target material, including the media, in two spaces on the upper and lower sides of the large-diameter section. That is, multiple grooves formed on the upper and lower surfaces of the centrifugal rotor scoop up the media that reach the periphery of the centrifugal rotor together with the dispersion target material, catch them in the grooves, and send them toward the inner circumferential wall of the container.

[0009] The dispersion material, including the media, sent out from the grooves on the upper surface (hereinafter referred to as "dispersion material, etc.") collides with the inner wall of the container and returns to the rotation axis side in the space between the upper surface and the downstream side of the dispersion disk facing the upper surface. The dispersion material, etc. sent out from the grooves on the lower surface collides with the inner wall of the container and returns to the rotation axis side in the space between the lower surface and the bottom surface of the container facing the lower surface. The dispersion material, etc. that returns to the rotation axis side in both spaces is drawn into each ring-shaped groove and passes through each groove again, and is sent out toward the inner wall of the container. This series of flows of dispersion material, etc. is repeated, resulting in a circulating flow.

[0010] Therefore, by providing a centrifugal rotor at the most downstream side of the rotating shaft, the disperser can prevent uneven distribution of media in the discharge section, resulting in stagnation and blockage, and ultimately allows the dispersion target to be discharged efficiently from the container. Furthermore, the circulation flows generated in the two spaces on the upper and lower sides of the large-diameter section shear the media due to the speed difference between them and atomize the dispersion target due to collisions between the media. These synergistic effects can increase the amount of dispersion target to be processed per unit time.

[0011] In the above configuration, it is preferable that each groove on the lower surface is formed deeper at least on the discharge portion side than other portions (Claim 2). For example, the discharge portion is provided around the rotation shaft inserted from the center of the bottom surface of the container, the lower surface of the large diameter portion is tapered from the outer edge toward the rotation shaft, and the grooves on the lower surface are formed deeper from the outer edge toward the rotation shaft (Claim 3).

[0012] With this configuration, the deeper portion of the groove on the underside facing the discharge section has a stronger force to lift up media than the other portions. Therefore, the groove more reliably lifts up media around the discharge section and circulates it in the space on the underside, more reliably preventing stagnation and blockage due to uneven distribution of media that tends to occur in the discharge section.

[0013] In the above configuration, each groove in the lower surface may be formed deeper than each groove in the upper surface (claim 4).

[0014] According to this configuration, it is possible to vary the strength of the circulating flow generated in both the upper and lower spaces on either side of the large diameter portion.

[0015] In the above configuration, when the upper and lower surfaces of the large diameter portion are viewed from the front from both ends of the rotating shaft, it is preferable that the area occupied by the widths of the multiple grooves is set in the range of 15.3% to 80% of the area of ​​the large diameter portion (Claim 5).

[0016] With this configuration, the grooves can increase the force that scrapes up the media.

[0017] In the above configuration, it is preferable that the ring-shaped groove has a plurality of holes penetrating through the large diameter portion in the thickness direction (claim 6).

[0018] According to this configuration, the holes in the ring-shaped groove can draw the media stagnating and clogging in the discharge section into the circulating flow. [Effects of the Invention]

[0019] The present invention provides a disperser that can suppress stagnation and clogging of media unevenly distributed at the discharge outlet of a container and can process a large amount of material to be dispersed at high speed. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a cross-sectional view showing a schematic configuration of a disperser according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of the dispersion rotor from the upstream side. [Figure 3] FIG. 2 is a front view of a dispersion disk. [Figure 4] FIG. 2 is a side view of the centrifugal rotor. [Figure 5] FIG. 2 is a front view of the centrifugal rotor. [Figure 6] FIG. [Figure 7] FIG. 2 is a perspective view of the centrifugal rotor from the upstream side. [Figure 8] FIG. 2 is a perspective view of the centrifugal rotor from the downstream side. [Figure 9] 3 is a schematic diagram showing the flow of a dispersion target during dispersion processing in the disperser of the embodiment. FIG. [Figure 10] FIG. 2 is a schematic diagram showing the flow of a circulating flow generated around a centrifugal rotor. [Figure 11] FIG. 10 is a cross-sectional view showing a schematic configuration of a disperser according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0021] <Embodiment> Hereinafter, one embodiment of a media-type disperser according to the present invention will be described in detail with reference to the drawings. The disperser of this embodiment will be described as a disperser (e.g., a bead mill) that mixes and disperses a material to be dispersed using, for example, zirconia beads as media. However, the present invention can be used not only as a disperser but also as a grinder that finely crushes a material to be granulated. Zirconia beads are an example of media, and are appropriately selected depending on the type of material to be dispersed, the hardness and diameter of the particles, the viscosity and specific gravity of the solvent (raw material paste) to be added, and the like.

[0022] The disperser 1 is a horizontal type disperser, as shown in Fig. 1. The disperser 1 includes a container 2 and a rotating shaft 3, to which a plurality of dispersing rotors 4, a plurality of dispersing disks 20, and one centrifugal rotor 30 are attached.

[0023] The container 2 is a substantially sealed cylindrical tank. One end face of the container 2 has an input part 5 for inputting the dispersion target therein, and the other end face opposite to the input part 5 has a discharge part 6.

[0024] The input unit 5 is configured by connecting a supply pipe 7 which communicates with the inside of the container 2. The supply pipe 7 is connected to a pump or the like on the upstream side thereof for pressure-feeding the dispersion target.

[0025] The discharge section 6 is composed of a gap separator 8 and a discharge pipe 9. The gap separator 8 separates the media contained in the processed dispersion material that has been pressure-fed inside the container 2 and reached the most downstream position, and discharges only the dispersion material. That is, the gap separator 8 is composed of a rotating rotor 10 provided on the rotating shaft 3 and a fixed stator 11 that surrounds the outer periphery of the rotating rotor 10. The gap between the rotating rotor 10 and the fixed stator 11 is adjusted to prevent the media from passing through the gap. Note that the gap separator 8 is an example that functions as a discharge port in the present invention, and is not limited to this configuration. In other words, any device that can separate the media and the dispersion material and discharge only the dispersion material may be used, such as a screen mechanism.

[0026] The discharge pipe 9 discharges the dispersion object separated by the gap separator 8 to the outside of the disperser 1 .

[0027] The container 2 is provided with a jacket 14 on its outer periphery. The jacket 14 adjusts the temperature inside the container 2 by supplying and circulating a refrigerant, hot water, or the like through a flow path formed inside the jacket 14.

[0028] The rotating shaft 3 is inserted into the container 2 from the discharge side via a mechanical seal 12 and extends to the input side. That is, the rotating shaft 3 is cantilevered on the discharge side. The base end of the rotating shaft 3 is directly or indirectly connected to a drive source such as a motor (not shown), and its rotation is controlled via a controller.

[0029] The dispersion rotor 4, dispersion disk 20, and centrifugal rotor 30 are attached to the rotating shaft 3 as follows: First, the dispersion disk 20 is attached at intervals to the rotating shaft 3. That is, the dispersion disks 20 are attached alternately from the tip (upstream side) of the rotating shaft 3, in the order of dispersion disk 20 and dispersion rotor 4, with one dispersion rotor 4 sandwiched between two dispersion disks 20 from the upstream and downstream sides. The centrifugal rotor 30 is attached to the rotating shaft 3 downstream of all of the multiple dispersion disks 20 so as to face the discharge section 6 (the most downstream side in Figure 1).

[0030] As shown in Figures 1 and 2, the dispersion rotor 4 has a truncated cone shape. A plurality of grooves 15 are formed on the outer peripheral surface of the dispersion rotor 4. The grooves 15 extend from the upstream to the downstream direction on the outer peripheral surface. Furthermore, the grooves 15 are formed at equal intervals on the outer periphery of the dispersion rotor 4. Each of the plurality of dispersion rotors 4 is configured so that the end with the larger outer diameter faces upstream, and when the dispersion rotors 4 are attached in series to the rotating shaft 3, the outer diameter of the downstream dispersion rotor 4 is larger than the smaller outer diameter of the upstream dispersion rotor 4. In addition, a through hole 16 is provided in the center of the dispersion rotor 4 for attachment to the rotating shaft 3.

[0031] As shown in FIG. 3, the dispersion disk 20 has a larger diameter than the end of the dispersion rotor 4 having a larger outer diameter, and has a plurality of protrusions 21 on its outer periphery.

[0032] The protrusions 21 are generally trapezoidal in shape and extend radially outward. In this embodiment, the protrusions 21 are composed of a first side 21a extending obliquely in the opposite direction to the rotational direction R of the dispersion disk 20, a second side 21b extending circumferentially from the first side 21a, and a third side 21c extending from the second side 21b toward the center of the dispersion disk 20. The first side 21a and the second side 21b are gently curved and smoothly connected. In addition, the third side 21c of one protrusion 21 and the first side 21a of the other protrusion 21 are smoothly connected.

[0033] Furthermore, through holes 22 are formed in the dispersion disk 20 at positions slightly shifted from each protrusion 21 toward the center of the disk.

[0034] The through holes 22 penetrate obliquely from the upstream surface of the dispersion disk 20 to the downstream surface, in the same direction as the rotation direction R of the dispersion disk 20. Furthermore, each of the openings of the through holes 22 on the downstream surface of the dispersion disk 20 overlaps with each of the multiple grooves 15 formed on the outer peripheral surface of the dispersion rotor 4, while in contact with the end face with the larger outer diameter of the dispersion rotor 4. In other words, the multiple grooves 15 on the upstream side of the dispersion rotor 4 are configured to communicate with each of the multiple through holes 22 of the dispersion disk 20.

[0035] In addition, a through hole 23 for attaching the dispersion disk 20 to the rotating shaft 3 is formed in the center of the dispersion disk 20.

[0036] As shown in FIGS. 1, 4 to 8, the centrifugal rotor 30 has a large diameter portion 32 having an outer diameter larger than that of the rotor main body 31 on the discharge side of the cylindrical rotor main body 31.

[0037] The rotor body 31 is cylindrical and has a diameter large enough to cover part of the through holes 22 formed in the distribution disk 20. In other words, the upstream end face of the rotor body 31 is in contact with the downstream side face of the distribution disk 20. The rotor body 31 has a plurality of grooves 36 formed along its outer circumferential surface, extending from the upstream to the downstream direction.

[0038] The grooves 36 are formed on the outer peripheral surface of the rotor body 31 at the same intervals as the through holes 22 so as to communicate with the through holes 22 of the distribution disk 20. The grooves 36 are also formed from the distribution disk 20 to just before the ring-shaped groove 33A described later.

[0039] The large diameter portion 32 has an upstream surface (hereinafter referred to as the "upper surface") that faces the downstream surface of the distribution disk 20 across the rotor main body 31, and the downstream surface of the large diameter portion 32 (hereinafter referred to as the "lower surface") faces the end surface (bottom surface) of the container 2 on the discharge side. In other words, the outer diameter of the large diameter portion 32 is approximately the same as the outer diameter of the distribution disk 20, and the gap between the inner peripheral wall of the container 2 and the outer edge of the large diameter portion 32 is approximately the same as the gap between the inner peripheral wall of the container 2 and the outer edge of the distribution disk 20.

[0040] 4, the large diameter portion 32 has a predetermined thickness and includes a horizontal upper surface 32A and a lower surface 32B that tapers from the outer edge toward the center. The angle of inclination of the lower surface 32B is approximately the same as the angle of inclination of the end surface of the container 2, and the clearance between the lower surface 32B and the end surface is maintained approximately constant.

[0041] Each of the upper surface 32A and the lower surface 32B has a ring-shaped groove 33A, 33B formed around the rotor main body 31, and a plurality of grooves 34A, 34B formed radially from the ring-shaped grooves 33A, 33B while communicating with the outer edges of each ring-shaped groove 33A, 33B.

[0042] The ring-shaped grooves 33A and 33B have the same shape, with the same inner and outer diameters, and surround the outer periphery of the rotor body 31. In addition, both ring-shaped grooves 33A and 33B are formed with a plurality of through holes 35 that penetrate the large diameter portion 32 in the thickness direction and communicate with both ring-shaped grooves 33A and 33B.

[0043] The through-hole 35 in this embodiment is an elongated hole in the shape of a circular arc, but is not limited to this shape and can be changed to an elliptical, circular, or other suitable shape and size.

[0044] The groove 34A on the upper surface 32A has a constant depth, while the groove 34B on the lower surface 32B is formed deeper from the outer edge toward the rotation axis 3. In the large-diameter portion 32 of the present embodiment, the depths of the groove 34A and the groove 34B are set such that, as shown in FIG. 4, the depth D1 of the groove 34A, the depth D2 on the outer-edge side of the groove 34B, and the depth D3 on the rotation-axis side of the groove 34B satisfy D1 < D2 < D3. That is, while the depth D1 of the groove 34A is constant, the groove 34B is set to become deeper as it goes from the depth D2 at the outer edge to the depth D3 at the other end on the rotation-axis side.

[0045] By making the depth on the rotation-axis side of the groove 34B the deepest, a stronger scraping-up force than other parts is exerted, and the media that gathers at the gap separator 8 that functions as a discharge port provided near the center of the bottom surface of the container 2 can be scraped up and taken into the groove 34B.

[0046] Furthermore, when the upper surface 32A and the lower surface 32B of the large-diameter portion 32 are viewed from the front at both ends of the rotation axis 3, the occupied areas of the plurality of grooves 34A and 34B on each surface are set within the range of 15.3% to 80%, preferably 50% to 70%, and more preferably 55% to 65%. Here, the occupied area is the ratio that each of the grooves 34A and 34B occupies in the area of the annular portion where the grooves 34A and 34B are formed from the outer edge of the ring-shaped grooves 33A and 33B on the upper surface 32A and the lower surface 32B to the outer edge of the large-diameter portion 32. In the case of the present embodiment, the occupied area is set to 60%. By making the occupied area of each of the grooves 34A and 34B 15.3% or more, the force for scraping up the media is enhanced, and a circulation flow of the dispersion target including the media in the operation explanation described later can be surely generated. The number of each of the grooves 34A and 34B has a lower limit width that does not cause clogging when a plurality of media pass through each of the grooves 34A and 34B simultaneously, is not less than the lower limit value, and is appropriately changed according to the diameter of the centrifugal rotor 30.

[0047] A recess 32C is formed in the center of the downstream surface of the large diameter portion 32, into which the tip of the rotating rotor 10 constituting the gap separator 8 is fitted to be connected and fixed. Furthermore, a through hole for attachment to the rotating shaft 3 is formed in the center of the recess 32C.

[0048] <Operation description> Next, a series of processes for the dispersion object using the dispersing machine 1 having the above configuration will be described.

[0049] The material to be dispersed is introduced into the container 2, which has already been charged with media, via the supply pipe 7. The material to be dispersed is pumped downstream by a pump. As the material flows downstream, it is stirred and dispersed by the rotation of the multiple dispersion rotors 4 and multiple dispersion disks 20, and moves downstream along the inner wall of the container.

[0050] At this time, the media are distributed approximately uniformly in the region between the inner peripheral wall of the container 2 and the outer periphery of each dispersion disk 20 (hereinafter referred to as the "dispersion region"). That is, most of the media continue to rotate while spreading radially from the dispersion disk 20 toward the inner peripheral wall of the container 2 in each dispersion region.

[0051] However, for example, in a disperser 1 equipped with a container 2 of 20 liters or more, the rotation speed of the centrifugal rotor 30 becomes slower than in a disperser 1 equipped with a container 2 of 5 liters, and part of the media flows downstream along the inner wall of the container 2 together with the material to be dispersed.

[0052] 9 and 10, the centrifugal rotor 30 circulates the material to be dispersed, including the media M, that has flowed through two spaces on the upper and lower sides of the large-diameter portion 32. That is, each of the multiple grooves 34A, 34B formed on the upper and lower surfaces 32A, 32B of the centrifugal rotor 30 scoops up the media M that have reached the periphery of the centrifugal rotor together with the material to be dispersed, catches them in the groove, and sends them out toward the inner circumferential wall of the container 2. That is, each groove 34A, 34B applies centrifugal force generated by the rotation of the centrifugal rotor 30 to the caught media M, sending them out toward the inner circumferential wall of the container 2 together with the material to be dispersed.

[0053] The dispersion object containing the media M sent out from the groove 34A on the upper surface 32A collides with the inner peripheral wall of the container 2 and returns to the rotation axis side in the space between the upper surface 32A and the lower surface of the dispersion disk 20 facing the upper surface 32A.

[0054] The dispersion object or the like sent out from the groove 34B of the lower surface 32B hits the inner peripheral wall of the container 2 and returns to the rotation axis side in the space between the lower surface 32B and the bottom surface of the container 2 opposite the lower surface 32B.

[0055] The dispersion target material, etc. that returns to the rotation axis side in both spaces is drawn into each of the ring-shaped grooves 33A, 33B and passes through each groove again, and is sent out toward the inner peripheral wall of the container 2. This series of flows of the dispersion target material, etc. is repeated, forming a circulating flow.

[0056] The circulating flow is adjusted to a degree that circulates the media M that blocks the gap separator 8 or that is stagnant or unevenly distributed nearby, and the processed dispersion material that flows toward the gap separator 8 along the inner peripheral wall and bottom surface of the container 2 is discharged to the outside through the gap separator 8 without being obstructed. In addition, collisions of the dispersion material, etc. with the inner peripheral wall of the container 2 due to the circulating flow promote shearing of the dispersion material and collisions between the media, thereby promoting atomization of the dispersion material.

[0057] The above series of processes are repeated within a preset time period and then completed.

[0058] According to the disperser 1 configured as described above, by providing the centrifugal rotor 30 on the most downstream side of the rotating shaft 3, it is possible to prevent uneven distribution of media M in the gap separator 8, which corresponds to the discharge outlet, and prevent it from stagnating or clogging. That is, media M can be circulated by the circulation flows generated in the two spaces on the upper and lower sides of the large-diameter portion 32. In particular, the groove 34B on the lower side is formed deep from the outer edge of the large-diameter portion 32 toward the rotating shaft 3. Therefore, the deepest part, close to the gap separator 8, generates a strong scraping force, lifting media M from the bottom of the container 2 and the gap separator 8 and capturing them in the groove. Furthermore, the groove 34B applies centrifugal force to the captured media M, sending them toward the inner wall of the container 2, where they can be continuously circulated by being entrained in the circulation flow returning to the rotating shaft side.

[0059] Furthermore, the area occupied by the grooves 34A, 34B on the upper surface 32A and the lower surface 32B is set to a range of 15.3% to 80% of the area of ​​the large diameter portion 32, so that the media M present on the bottom surface can be lifted with a stronger scraping force.

[0060] Furthermore, the through holes 35 that connect the ring-shaped grooves 33A and 33B can draw the media M that are stagnating in the gap separator 8 into the ring-shaped groove 33A. In other words, the media will not be concentrated on the lower surface side.

[0061] Only the dispersion subject after dispersion processing can be efficiently discharged from the gap separator 8, and due to the synergistic effect of these, the processing amount of the dispersion subject per unit time can be increased.

[0062] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design modifications are possible within the scope of the claims.

[0063] (1) In the disperser 1 having the above configuration, the centrifugal rotor 30 may be configured not to have the through-holes 35 that connect the ring-shaped grooves 33A and 33B depending on the type of material to be dispersed. In other words, if the media stagnating in the gap separator 8 can be floated and placed in the circulating flow by the scraping force of the grooves 34B alone, the centrifugal rotor 30 may not have the through-holes 35.

[0064] (2) In the disperser 1 having the above configuration, the lower surface 32B of the large diameter portion 32 of the centrifugal rotor 30 is not limited to a tapered shape, and may be configured to match the shape of the bottom surface of the container 2 so that the clearance between the bottom surface and the lower surface 32B is constant. For example, if the bottom surface of the container 2 is flat, the lower surface 32B is made flat. In this case, the depth of the groove 34B is constant. For example, in FIG. 4, when the lower surface 32B is made flat, that is, when flattened based on the depth D3, the depths of the grooves 34A and 34B may be the same. Note that the depths of both grooves are not limited to being the same, and it is preferable that the depth D3 of the groove 34B is deeper than the depth D1 of the groove 34A.

[0065] (3) In the disperser 1 having the above configuration, the grooves 34A, 34B of the large diameter portion 32 are formed straight in the radial direction, but they may also be formed so as to face diagonally backward in the opposite direction to the rotation direction of the centrifugal rotor 30. With this configuration, centrifugal force can be applied to the media caught in the grooves for a long period of time, and the media can be sent out vigorously toward the inner peripheral wall of the container 2.

[0066] (4) In the disperser 1 of each of the above embodiments, the dispersion disc 20 may not have the through-holes 22.

[0067] (5) In the disperser 1 having the above configuration, any number of the multiple dispersion rotors 4 may be attached to the rotating shaft 3 in the reverse direction depending on the type of material to be dispersed. That is, they are attached to the rotating shaft 3 so that the small diameter side of the truncated cone faces upstream. By attaching the dispersion rotors 4 in the reverse direction, it is possible to adjust the speed of the material to be dispersed flowing downstream.

[0068] Furthermore, the dispersion rotor 4 is not limited to a truncated cone shape. For example, the dispersion rotor 4 may be cylindrical. In this case, the outer periphery of the dispersion rotor 4 may be roughened, or, as in the above embodiment, multiple grooves 15 extending from upstream to downstream along the outer periphery of the dispersion rotor 4 may be formed at equal intervals, and the grooves 15 may be configured to communicate with the through holes 22 of the dispersion disk 20.

[0069] (6) The disperser 1 of each of the above embodiments may be configured without the dispersion rotor 4. For example, as shown in Fig. 11, the dispersion rotor 4 may be removed from the configuration of the disperser 1 shown in Fig. 1, and multiple dispersion disks 20 may be attached to the rotation shaft 3 at equal intervals. [Explanation of symbols]

[0070] 1 Disperser 2 containers 3 Rotation Axis 4. Dispersion rotor 5 Input section 6 Discharge section 7 Supply pipe 8 Gap separator (discharge port) 9 Discharge pipe 20 Distributed Disks 30 Centrifugal rotor 31 rotor body 32 Large diameter section 33A, 33B Ring-shaped groove 34A, 34B groove 35 through holes

Claims

1. A media-type dispersing machine disperses a material to be dispersed using the media while sending the media in the container and a material to be dispersed, which is fed from an inlet provided on the upstream side of the container, toward a discharge part provided on the downstream side of the container, A rotation axis; A plurality of dispersion disks attached to the rotating shaft at intervals; a centrifugal rotor attached to the rotary shaft so as to face the discharge portion downstream of all of the plurality of dispersion disks; The centrifugal rotor has a cylindrical rotor body and a large diameter portion having an outer diameter larger than an outer diameter of the rotor body, the large diameter portion has a ring-shaped groove formed around the rotor body on both an upper surface on the upstream side and a lower surface on the downstream side, and a plurality of grooves formed radially from the ring-shaped groove while communicating with an outer edge of the ring-shaped groove, A dispersing machine characterized in that the large diameter portion and the downstream side surface of the dispersion disk are opposed to each other.

2. Each groove on the lower surface is formed deeper at least on the discharge portion side than other portions.

2. The dispersing machine according to claim 1 .

3. The discharge portion is provided around the rotation shaft that is inserted from the center of the bottom surface of the container, The lower surface of the large diameter portion is tapered from the outer edge toward the rotary shaft, and the groove on the lower surface is formed deeper from the outer edge toward the rotary shaft.

3. The dispersing machine according to claim 2 .

4. The grooves on the lower surface are formed deeper than the grooves on the upper surface.

2. The dispersing machine according to claim 1 .

5. When the upper and lower surfaces of the large diameter portion are viewed from the front from both ends of the rotating shaft, the area occupied by the plurality of grooves is set in the range of 15.3% to 80% of the area of ​​the large diameter portion.

2. The dispersing machine according to claim 1 .

6. The ring-shaped groove has a plurality of holes penetrating the large diameter portion in the thickness direction.

2. The dispersing machine according to claim 1 .

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